diff options
| author | Christophe Leroy <[email protected]> | 2024-07-02 15:51:33 +0200 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-07-12 15:52:19 -0700 |
| commit | 57fb15c32f4f6a4f1a58f1fbc58a799c3f975ed8 (patch) | |
| tree | f7eedba4527abcdb48867a0de8b40b3f7ae233af /arch/powerpc/include/asm/page.h | |
| parent | 7c44202e36097e23240025298ccd1fe4eacfd94e (diff) | |
powerpc/64s: use contiguous PMD/PUD instead of HUGEPD
On book3s/64, the only user of hugepd is hash in 4k mode.
All other setups (hash-64, radix-4, radix-64) use leaf PMD/PUD.
Rework hash-4k to use contiguous PMD and PUD instead.
In that setup there are only two huge page sizes: 16M and 16G.
16M sits at PMD level and 16G at PUD level.
pte_update doesn't know page size, lets use the same trick as
hpte_need_flush() to get page size from segment properties. That's not
the most efficient way but let's do that until callers of pte_update()
provide page size instead of just a huge flag.
Link: https://lkml.kernel.org/r/7448f60a9b3efd396595f4f735d1e0babc5ae379.1719928057.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Michael Ellerman <[email protected]> (powerpc)
Cc: Jason Gunthorpe <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Oscar Salvador <[email protected]>
Cc: Peter Xu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'arch/powerpc/include/asm/page.h')
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 7d3c3bc40e6a..c0af246a64ff 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -269,14 +269,6 @@ static inline const void *pfn_to_kaddr(unsigned long pfn) #define is_kernel_addr(x) ((x) >= TASK_SIZE) #endif -#ifdef CONFIG_PPC_BOOK3S_64 -/* - * Book3S 64 stores real addresses in the hugepd entries to - * avoid overlaps with _PAGE_PRESENT and _PAGE_PTE. - */ -#define HUGEPD_ADDR_MASK (0x0ffffffffffffffful & ~HUGEPD_SHIFT_MASK) -#endif /* CONFIG_PPC_BOOK3S_64 */ - /* * Some number of bits at the level of the page table that points to * a hugepte are used to encode the size. This masks those bits. |